Lexus SC300 / Lexus SC400. Manual — part 331
4.
REMOVE OIL COOLER
Remove the three bolts and oil cooler.
INSPECTION OF OIL COOLER
INSPECT OIL COOLER
Check the oil cooler for damage or clogging.
If necessary, replace the oil cooler.
INSTALLATION OF OIL COOLER
(See Components on page
1.
INSTALL OIL COOLER
Install the oil cooler with the three bolts.
Torque: 18 N
⋅
m (180 kgf
⋅
cm, 13 ft
⋅
lbf)
2.
CONNECT HOSES FROM OIL COOLER
Connect the following hoses:
(1) Inlet hose (from reservoir tank)
(2) Outlet hose (from hydraulic motor)
3.
INSTALL PS OIL COOLER
Install the oil cooler with the two bolts.
4.
REMOVE FENDER LINER
5.
FILL COOLING FAN RESERVOIR TANK WITH FLUID
(See pages
and 24)
6.
START ENGINE AND CHECK FOR LEAKS
–
COOLIING SYSTEM
Electronically Controlled Hydraulic
Cooling Fan (Oil Cooler)
CO–59
Electronic Control Parts
(System Circuit)
(Cooling Fan ECU)
COMPONENTS FOR REMOVAL AND
INSTALLATION
CO–60
–
COOLIING SYSTEM
Electronically Controlled Hydraulic Cooling Fan
(Electronic Control Parts)
INSPECTION OF COOLING FAN ECU
1.
DISCONNECT CABLE FROM NEGATIVE TERMINAL OF
BATTERY
CAUTION: Work must be started after 20 seconds or longer
from the time the ignition switch is turned to the ”LOCK” posi-
tion and the negative (–) terminal cable is disconnected from
the battery.
2.
DISCONNECT COOLING FAN ECU CONNECTOR
(See Components on page
(a) Remove the instrument panel under cover.
(b) Remove the lower instrument panel finish panel and
glove compartment door assembly.
(c) Disconnect the cooling fan ECU connector.
3.
INSPECT COOLING FAN ECU
(a) Connect the cable to the negative (–) terminal of the
battery.
(b) Check the connector on the wiring harness side as
shown in the chart.
Check for
Tester connection
Condition
Specified value
Voltage
1–Ground
Ignition switch ON
Battery voltage
Resistance
2–3
Solenoid valve at cold (20
°
C (68
°
F))
7.5–8.5
Continuity
4–Ground
–
Continuity
Continuity
5–Ground
Throttle valve open
No continuity
Continuity
5–Ground
Throttle valve closed
Continuity
Resistance
9–10
Coolant temp. at 80
°
C (176
°
F)
1.48–1.58 k
(c) Disconnect the cable from the negative (–) terminal of
the battery.
4.
RECONNECT COOLING FAN ECU CONNECTOR
5. RECONNECT CABLE TO NEGATIVE TERMINAL OF
BATTERY
–
COOLIING SYSTEM
Electronically Controlled Hydraulic
Cooling Fan (Electronic Control Parts)
CO–61
(Water Temperature Sensor)
COMPONENTS FOR REMOVAL AND
INSTALLATION
INSPECTION OF WATER TEMPERATURE
SENSOR
1.
DISCONNECT CABLE FROM NEGATIVE TERMINAL OF
BATTERY
CAUTION: Work must be started after 20 seconds or
longer from the time the ignition switch is turned to the
”LOCK” position and the negative (–) terminal cable is
disconnected from the battery.
2.
REMOVE ENGINE UNDER COVER
3.
DRAIN ENGINE COOLANT (See page
4. REMOVE
WATER
TEMPERATURE
SENSOR
(a) Disconnect the water temperature sensor connector.
(b) Remove the water temperature sensor from left side of
the radiator lower tank.
(c) Remove the O–ring from the water temperature sensor.
CO–62
–
COOLIING SYSTEM
Electronically Controlled Hydraulic
Cooling Fan (Electronic Control Parts)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст